Manuals & Resources

Dayton Audio iMM-6 Calibrated Measurement Microphone for Tablets iPhone iPad and Android

Brand:|Model: iMM-6
Turn your iPad, iPhone, or iPod touch into a laboratory grade audio measurement device with Dayton Audio's iMM-6 iDevice calibrated measurement microphone.
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Part # 390-810
  • Precision condenser microphone for critical measurement
  • For use with Apple iPad, iPhone, iPod Touch via 3.5mm TRRS headset jack
  • Compatible with Android and Windows Phone devices with TRRS jack
  • Headphone/Line Out pass-through jack for test signals or listening
  • Kickstand feature elevates and angles device and microphone capsule
  • True omnidirectional pattern with calibrated flat frequency response
  • Rugged construction with high-quality components

Product Details

Dayton Audio iMM-6 Calibrated Measurement Microphone for Tablets iPhone iPad and Android

The Dayton Audio iMM-6 is a professional-quality measurement and recording microphone that is designed to work with the entire suite of Apple "iDevices" – iPad, iPhone, and iPod. The rugged construction and compact size make it the perfect companion for audio professionals who must work on-location performing acoustic analysis, monitoring audio levels, or recording. Each iMM-6 is individually hand-calibrated using a laboratory-standard measurement microphone, for consistent, repeatable measurements that match the level of precision previously offered only by expensive stand-alone microphones.

Dayton Audio's iMM-6 is also compatible with Android and Microsoft devices that use a 3.5 mm TRRS jack. A headphone/line-out is built in for monitoring the recorded signal, and a kickstand elevates and angles the measurement capsule for more direct measurements. Each iMM-6 is ruggedly built with high-quality components. A sturdy carrying case with foam insert is included.

A unique serialized calibration file is available for the iMM-6. This calibration file can be used by most audio-analysis apps for the iPad, iPhone, and iPod Touch (see compatibility list for recommendations). Visit Dayton Audio's website, where you will be prompted to enter the serial number from the case of your iMM-6. After entering the serial number, your download will start.

Note: In order to use your iMM-6 as a calibrated measurement microphone you may be required to purchase an app for your tablet or smart phone.

Specifications: • Capsule type: Precision 6 mm electret condenser • Polar Response: True omnidirectional • Frequency response: 18-20,000 Hz, ± 0.5 dB (calibrated) • Impedance: 200 ohms • Sensitivity at 1 kHz into 1K ohm: 10 mV/Pa (-40 dBV, re. 0dB = 1V/Pa) • Maximum SPL for 1% THD @ 1,000 Hz: 127 dB • S/N ratio: 70 dB (A-weighted, varies depending on host device) • Connector: Gold-plated 3.5 mm TRRS • Weight: Ultra-light 7.6 grams.

Help for Android and iPhone users:

There are many applications in the market that provide the smart phone user with audio measurement software.  We do not recommend any specific apps, however, in an attempt to assist the new user of an iMM-6 we have listed links and some helpful pointers below.  One for the iDevice/iPhone platform and the other for Android devices.


AudioTools app (from Studio Six Digital):

Here is the procedure for loading the iMM-6 calibration file into AudioTools by Studio Six Digital on an iPhone:

1)     You need a Wi-Fi network where you can view other computers on the network. You also need a laptop PC, or a desktop PC connected directly to the wireless router via either a cable or a wireless networking card. Your iPhone and desktop PC will need to be able to 'see' each other to transfer files. Your wireless router should not be blocking port 9900. (If you haven't set your wireless router specifically to do this, it shouldn't be blocking this port.)

2)     Make sure your iPhone has Wi-Fi enabled, and is connected to the same wireless network as your PC.

3)     On your PC, download the iMM-6 serial calibration file (found on the bottom of the iMM-6 aluminum container) for your specific microphone from and save it where you can easily locate it. You will need the serial number that is printed on the back of your iMM-6 carrying case to access the unique calibration file for your iMM-6.

4)     On the iPhone, within AudioTools, navigate to the Input Sources screen and choose Microphone Calibration. The Calibration Screen will be displayed.

5)     From the Calibration Screen, choose the Cal File option. Tap the Files button to bring up the Files screen.

6)     At the top of the Files screen, there is a field labeled "URL", with http:// and an IP address (sequence of four three-digit numbers), plus a port number following the colon. (example: – yours will probably be different)

7)     From your PC which is connected to the wireless network, open up your web browser and type the full URL from the "URL" field into the address bar of the web browser. (Following the example above, you would type into the address bar). This is the address for direct file transmission to your iPhone.

8)     You should see a page appear with the heading "Documents on Strider" or something similar. Your iPhone is acting as a server on your WiFi network, and is serving this page to your PC. Click on the "calibration" link, which will navigate you to the "calibration" directory on your iPhone.

9)     In the gray box labeled "Upload", click on the "Choose File" button to select your file. Find the iMM-6 calibration file you downloaded from in step (3) and double-click on it.

10)   In the gray box labeled "Upload", you should now see your iMM-6 calibration file listed. Click on "Send" to send the file to your iPhone. When done, the page will refresh and show your iMM-6 calibration file in the "calibration" directory.

11)   Close your web browser. You are finished with the part of the upload that uses your PC.

12)   On your iPhone, tap "Done" to return to the Calibration Files screen, and then tap the "Reload" button (round arrow) to refresh the view. You should see the calibration file appear.

13)   To load the calibration file, tap the calibration file name and then tap "Apply".

14)   The calibration file is now loaded. Tap "Done" to return to the Calibration screen.

These instructions are based on the instructions given on Studio Six Digital.


AudioTool by Bofinit Corporation

AudioTool supports loading a calibration file for the Dayton Audio iMM-6 microphone. These files have names like "99-0101.txt" when downloaded from Dayton's website. For use in AudioTool, you will simply need to rename the file so that it has the .cal file type (e.g. "") and save it in the AudioTool directory on your Android phone. Then, in AudioTool, select the "Load Cal" option from the Menu, and choose the Dayton file from the list. The calibration data will be loaded, power summed to the 1/3 octave bins used by AudioTool, and saved in your Preferences - there is no further need to load the file whenever you start AudioTool, unless you change the calibration method or alter the calibration values manually.

Dayton Audio iMM-6 Calibrated Measurement Microphone for Tablets iPhone iPad and Android
  • BrandDayton Audio
  • ModeliMM-6
  • Part Number390-810
  • UPC848791000331
  • Product CategoryMeasurement Microphones
  • Unit of MeasureEA
  • Product Rating
    (29 Reviews)
  • Weight0.15 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

View similar products to the Dayton Audio iMM-6 Calibrated Measurement Microphone for Tablets iPhone iPad and Android
in the Measurement Microphones product category.


Dayton Audio iMM-6 Calibrated Measurement Microphone for Tablets iPhone iPad and Android
Dayton Audio iMM-6 Calibrated Measurement Microphone for Tablets iPhone iPad and Android is rated 4.5862 out of 5 by 29.
Rated 1 out of 5 by from Had to buy an app to use product.....was not expecting to have to go purchase an app as well. not impressed
Date published: 2015-09-30
Rated 2 out of 5 by from MehUsed strictly for audio recording from an iPhone 5s. Easily over-powered by loud music. Does decent with musicality and instruments, but terrible on vocal reproduction, which sounds muffled and far away. It IS a very nice, portable size, but with some trade-off from the standard 5s mic, which is more easily over-powered by wind and ambient noise but has better vocals.
Date published: 2015-03-22
Rated 5 out of 5 by from Small but big potentialIm using it in conjunction with AudioTools (iPhone) for fine tuning of my home and car audio systems.
Date published: 2015-03-04
Rated 4 out of 5 by from Nice QualityBought this to check the SPL levels in my car when driving to see if I am doing damage to my ears. Comes with cal curve. Seems to work great. Nice packaging. Nice Quality.
Date published: 2015-01-28
Rated 5 out of 5 by from Great!I use this on my iPad to pink noise a floor monitor at church. It seems to have helped me eq the monitor for better sound and less feedback.
Date published: 2014-12-29
Rated 5 out of 5 by from excellent valueI have a small band and we play mostly at small venues, coffee shops, parties and the like. I have no need for an expensive system analyzer. However using my iPad and this mic and Audio Tools app I can analyze and EQ a room in a few minutes for very little money. The mic cal file is easy to install on the iPad by simply following the instructions on Dayton Audio's web site.It's all we need and it's accuracy is plenty good enough for small group, small venues or even eq'ing a home theater.Great little tool!!
Date published: 2014-12-23
  • 2015-11-28T06:26CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_29
  • loc_en_US, sid_390-810, PRD, sort_mostRecent
  • clientName_PartsExpressInternational

Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email  for a prompt reply.
Dayton Audio iMM-6 Calibrated Measurement Microphone for Tablets iPhone iPad and Android

Can this microphone be used on a Samsung S3 smart phone or AUSU ME581 CL memo pad instead of Iphone?

Asked by: BS Goh
It is also rated to work with measurement software that is available for Android devices in your app store such as AudioTool by the Bofinit Corporation.
Answered by: GregT
Date published: 2015-11-18

will a trrs to trs adaptor plug make this useable with standard line in port on the laptop?

Asked by: Ushi
The manufacturer only recommends its use with Apple iPad, iPhone, iPod Touch, Android, and Windows Phone devices with via 3.5mm TRRS jack.
Answered by: GregT
Date published: 2015-06-09

I have a newer laptop with a TRRS jack. I have downloaded the calibration file for AudioTools. I need to convert the .txt file to a REW .cal file. In other words, I need the format definition of the the AudioTools calibration file I downloaded. 

Asked by: fdrahuse
We are sorry but we am not aware of a conversion for that situation. The only thing listed is the variation from flat, but no frequency or phase information is included so there is no way we are aware of to generate a normal FRD style calibration from it.
Answered by: GregT
Date published: 2015-05-27

Any recommendations on PC apps that would work?  For use with Microsoft Surface.

Asked by: Ropeyman
Audio tools by Studio Six Digital
Answered by: TomI
Date published: 2015-03-02

Will Windows Phone users be getting any love with an app for this mic?

Asked by: Rick64D
Sorry, we can't answer that. It's up to the Windows Phone developer world to integrate native support for mic calibration files into their audio analyzer apps. However, you can benefit from the superior quality of the iMM-6's mic capsule even if your app cannot use calibration files. The iMM-6 capsule is more linear at high volumes than your built-in mic, and some users are reporting a lower noise floor as well.
Answered by: Nick11032014
Date published: 2015-04-19

Can this mic be used to record a loud concert on android phone?

Asked by: Dllaffer
Yes but I believe it is limited to about 120db.
Answered by: Crudgmudgeon
Date published: 2014-11-04
  • 2015-11-28T06:59CST
  • bvseo_cps, prod_bvqa, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_15
  • loc_en_US, sid_390-810, PRD, sort_recentQuestionsFirst
  • clientName_PartsExpressInternational


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